LAX-LHR on VS will be a 744 and the LHR-THR on IR will be either a 747sp/741 or a 742 depending on the day/pay loads. Seating i guess on both a/c will be 3-4-3. I have been to LAX but I only connected there for another flight so I couldnt tell you much about it. LHR, go to the Queens Building if you get time just for a look at the airport. I have flown VS ont IR. VS where excellent in my views